Reinforced-concrete railway-tie



W. R. C. COOK.

REINFORCED CONCRETE RAILWAY TIE.

APPLICATION FILED IULY 6.1920.

Patented Dec. 14,1920.

UNITED STATES WILLIAM R. C; COOK, OF SEATTLE, WASHINGTON.

REINFORCED-CONCRETE RAILWAY-TIE.

Specification of Letters Patent.

Patented Dec. 14, 1920.

Application filed July 6, 1920. Serial No. 394,031.

To all whom it may concern:

Be it known that 1, WILLIAM R. C. COOK, a citizen of the United States, residing at Seattle, in the county of King and State of lli ashington, have invented certain new and useful Improvements in Reinforced-Concrete Railway-Ties, of which the following is a specification.

This invention relates to reinforced railway-ties; and its object is to produce a strong, durable and inexpensively constructed device of this character.

The invention consists in a concrete tie having embedded therein metal chairs upon which track rails are secured and serving as rigid supports therefor, said chairs being connected interiorly ofthe tie structure with rods which serve to maintain the chairs'in place and also act as. reinforcing elementsof the tie structure 'to' withstand the effects of both longitudinal and transverse strains.

The invention further consists in the novel construction, adaptation and combination of the parts of a tie as will be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a side elevation, shown partly in longitudinal vertical section of a railway-tie ems bodying the present invention, with track rails applied thereto. Fig. 2 is a perspective view of one of the metal rail-chairs, shown detached. Fig. 3 is a sectional View through 83 of Fig. 1. Fig. 4 is a fragmentary view, taken in front elevation of one of the rail chairs, to illustrate the, preferred means for securing a track-rail thereto, said track-rail being shown in transverse section. Fig. 5 view of the parts shown in Fig. 4.

In said drawings, the reference numeral 10 indicates the tie, generally of rectangular shape in horizontal section and preferably made with upwardly converging side surfaces 11 to provide a bottom 12 of greater width than the top surface 13. Said tie consists of a body of concrete composed of a suitable mixture of cement, sand and gravel and is reinforced by a system of rods 1 1,.

15, 16 and 17 disposed longitudinally of the tie, and a plurality of reinforcing rods, such as 18, disposed transversely" of the tie to furnish the requisite strength to prevent the tie from breaking or becoming fracis a side elevational tured when subjected'to the action of rail way trafiic or to varying climatic conditions.

Embeddedin the concrete body of the tie and spaced apart to accommodate track rails R is a pair of metal chairs, so called, which are each formed with horizontal table and base elements 19 and 20 which are castintegral with an upright post element 21. Said chairs are preferably positioned in the tie to have the table surfaces 22 flush with the top surface 13 of the concrete body although, if desired, they may be located to have the surfaces 22 slightly above the tie body. The table element 19 of a chair is provided with apertures 23, Fig.4, to receive the shanks 24 of rail securing bolts having heads 25 located within the concrete below the table. forcing rods 14 are formed to provide centrally of their denoted by 1 1 inTig. 1, disposed adjacent to the top surface 13 of the concrete body and from the ends of such central portions the rods 1 1 extend downwardly and, as at 14. directly below the bases of the respective chairs and terminate in upwardly directed extremities 14 outside of the chairs.

The reinforcing rods 15 have central portions 15 located adjacent to the bottom surface 12 of the tie body and thence extend upwardly and directly below, as at 15 the table elements 19 of the chairs to terminate in downwardly extending ends 15 The rods 14 and 15 extend lengthwise of the tie to within short distances from. the tie ends and serve to strengthen the same longitudinally and also serve to support the chairs, stirrup like, and distribute the strains or stresses due to the weight of moving or stationary cars throughout the length of the tie.

The longitudinal reinforcing rods 16 and 17 and transverse rods 18 are employed supplementary to the chair supporting rods 14 and 15, to withstand regional strains in the tie.

26 represents rail-clamping plates, of any suitable or approved construction, engaging over and with the flanges at opposite sides of the track rails R and are held in such engagement by the bolts 24 passing upwardly through the clamping plates to receive fastening devices such as keys 27.

Said keys are formed with oblique upper The above mentioned reinlen ths a horizontal portion,

edges which give wedging action when the keys are entered the slots provided therefor in the bolts to hold the respective clamping plates in place and which, in turn, secure the rails to the tie.

Each key is provided with a horizontal aperture for a split pin 28 whose bifurcated point is spread and bent laterally against the associated bolt to lock the key in its operative position.

From the foregoing, it is apparent that a tie constructed according to my invention has all of the metal parts therefor, except the top of the table, embedded in concrete so as to obviate contact with air and moisture, and it is therefore durable; it may be economically manufactured and affords an adequate support for railway track rails.

hat I claim is,

1. A railroad-tie consisting of a concrete body in which are embedded rail supporting chairs, each comprising spaced base and table elements integral with a connecting post element, longitudinal reinforcing rods for said bod formed with central portions disposed a jacent to the top surface of the tie and extending downwardly from such central portions below the chairs to support the same by engaging the base elements thereof, and 'longitudlnal reinforcing rods for said body having central portions disposed adjacent to the bottomsurface ofthe tie and extending upwardly from such central portions to afford bearings against the undersides of the respective table elements of the chairs, said rods being entirely incased in the concrete body and the chairs being embedded to the top surfaces of the respective table elements thereof to provide seating surfaces for track rails.

2. A railroad-tie consisting of two railsupporting chairs, each of which is formed with a base element, a post element extending upwardly therefrom and surmounted by a table element, rods extending lengthwise of the tie and supporting the chairs by engaging the same under the base and table elements thereof, a concrete body embedding said rods therein and also the chairs below the upper surfaces of the respective table elements, rail clamping plates, bolts rigidly secured in the body and extending upwardly through the chair tables and the plates, and plate engaging devices provided for the respective bolts.

Signed at Seattle, Washington, this 28th day of June, 1

WILLIAM R. 0. 000K.

Witnesses:

PIERRE BARNES, MARGARET G. SUPPLE. 

